About Ephedra torreyana S.Watson
Ephedra torreyana, commonly known as Torrey's jointfir or Torrey's Mormon tea, is a species in the genus Ephedra. It is native to deserts and scrublands of the Southwestern United States, specifically the states of Nevada, Utah, Colorado, Arizona, New Mexico, and Texas, as well as the state of Chihuahua and other areas of northern Mexico. This species was first formally described by Sereno Watson in 1879. In 1889, Otto Stapf placed it in section Alatae, "tribe" Habrolepides. In 1996, Robert A. Price retained E. torreyana within section Alatae, and did not recognize a separate tribe for this species.